Routt County (Steamboat Springs)
September
Weather in Routt County, Colorado for September 2026
Your guide to Routt County weather in September - trends and predictions
Until now, September 2026 in Routt County is slightly cooler than the historical average by 1.1 °F.
The forecast for the upcoming days in Routt County predicts a temperature of 18.1 °F, which is slightly above the historical average.
In general, the average temperature in Routt County at the beginning of September is 24.6 °F. As the month progressed, temperatures tended to significantly cool down, reaching an average of 17.9 °F by the end of September.
Routt County experiences moderate rainfall in September, with an average of 8 rainy days and a total precipitation of 61.5 mm.
New! Chat with our AI weatherman - it’s amazing and free.
Temperatures
Rain 🌧️
More
23
Dry days
8
Rainy days
0
Snow days
22°/5°
Temperatures
20 km/h
Avg max wind
46 %
Avg humidity
Routt County Weather September
Move between months or click on a day
Temperatures trend during September in Routt County
See the weather trend as well as the moving average line
September weather in Routt County day by day
Click on a date for more information
| Date | Weather | Temperatures | Rain | UV | More |
|---|---|---|---|---|---|
| Sept. 1 |  Sunny | 25° /6° | 0.9 mm | 7 | |
| Sept. 2 | Sunny | 25° /7° | 0.4 mm | 7 | |
| Sept. 3 |  Patchy rain possible | 25° /7° | 0.7 mm | 8 | |
| Sept. 4 | Sunny | 25° /7° | 0.4 mm | 7 | |
| Sept. 5 |  Partly cloudy | 24° /6° | 0.6 mm | 6 | |
| Sept. 6 | Sunny | 25° /6° | 0 mm | 7 | |
| Sept. 7 |  Overcast | 23° /6° | 1.7 mm | 5 | |
| Sept. 8 | Sunny | 25° /6° | 0 mm | 7 | |
| Sept. 9 | Patchy rain possible | 24° /6° | 0 mm | 7 | |
| Sept. 10 | Sunny | 25° /6° | 0.1 mm | 7 | |
| Sept. 11 | Patchy rain possible | 23° /7° | 0.6 mm | 5 | |
| Sept. 12 | Partly cloudy | 23° /6° | 2.2 mm | 5 | |
| Sept. 13 | Sunny | 21° /5° | 8.3 mm | 6 | |
| Sept. 14 | Sunny | 21° /6° | 4.8 mm | 5 | |
| Sept. 15 | Patchy rain possible | 22° /5° | 0.6 mm | 6 | |
| Sept. 16 |  Patchy light rain with thunder | 21° /5° | 3.2 mm | 4 | |
| Sept. 17 |  Moderate or heavy rain with thunder | 16° /6° | 11.4 mm | 3 | |
| Sept. 18 |  Cloudy | 18° /4° | 1 mm | 4 | |
| Sept. 19 | Sunny | 19° /4° | 2.9 mm | 5 | |
| Sept. 20 | Sunny | 20° /5° | 0.4 mm | 6 | |
| Sept. 21 | Overcast | 20° /5° | 5 mm | 6 | |
| Sept. 22 | Overcast | 19° /5° | 6.7 mm | 5 | |
| Sept. 23 | Cloudy | 16° /4° | 1 mm | 3 | |
| Sept. 24 | Overcast | 20° /3° | 0 mm | 4 | |
| Sept. 25 | Sunny | 21° /4° | 0.2 mm | 5 | |
| Sept. 26 | Sunny | 18° /5° | 0 mm | 6.5 | |
| Sept. 27 | Overcast | 19° /7° | 0.1 mm | 6 | |
| Sept. 28 | Patchy rain possible | 12° /6° | 1.3 mm | 2 | |
| Sept. 29 | Overcast | 16° /7° | 0.1 mm | 6 | |
| Sept. 30 | Sunny | 19° /4° | 0 mm | 6.4 | |
| Next | |||||
Important Notice
Our weather forecast for Routt County in September is based on the analysis of historical data rather than real-time forecast models. While this provides a general overview, weather conditions can change. We recommend that you check the Routt County forecast closer to your planned date for the most up-to-date weather information.
Change Month
Routt County in September - FAQ
What are the expected maximum and minimum temperatures in Routt County during September?
Enjoy moderate daytime temperatures of up to 22° and cooler nights around 5°. Ideal for a range of outdoor activities, from hiking to city tours.
How much rainfall should be expected in Routt County during September?
Moderate rainfall is anticipated in Routt County during September, with a total of 61.5 mm spread over approximately 8 days. Considering plans for rainy days is advisable.
What are the typical wind conditions in Routt County during September?
The average wind speed in Routt County during September is 20 km/h, suggesting breezy to windy conditions, depending on your activities.
September rainfall patterns in Routt County
Explore the daily rainfall trends and prepare for Routt Countys September weather 💧
Typically, Routt County has 8 rainy days in September with a total of 61.5 mm of rainfall.
UV exposure in Routt County during September
Stay informed about UV levels for safe outdoor activities throughout the month of September ☀️
Top locations in Routt County
Select a location for an accurate weather forecast
More Locations Quick links
More Routt County weather pages
You are here
Where is Routt County?Get accurate weather forecasts for Routt County, located at latitude 40.485 and longitude -106.832. Stay updated with localized weather information tailored for Routt County.
Found a mistake?
We appreciate your attention to details. Tell us here.